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XAFS Determination of Pb and Cd Speciation with Siderophores and the Metal/Siderophore/Kaolinite System

Journal Article · · AIP Conference Proceedings
DOI:https://doi.org/10.1063/1.2644472· OSTI ID:21054591
; ;  [1]; ;  [2]
  1. Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States)
  2. Department of Civil Engineering and Geological Sciences, University of Notre Dame, Notre Dame, IN 46556 (United States)

We provide evidence for hexadentate complexes of Pb2+ and Cd2+ with the trihydroxamate siderophore desferrioxamine B (DFO-B) at pH 7.5, and 9.0, respectively. Analysis of the species of Pb2+ and Cd2+ adsorbed at the surface of kaolinite clay under the same pH conditions and in the presence of DFO-B indicate that Pb2+ is sorbed as a metal-siderophore complex while Cd2+ is not.

OSTI ID:
21054591
Journal Information:
AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 882; ISSN APCPCS; ISSN 0094-243X
Country of Publication:
United States
Language:
English